The whole-home approach
A family home has more of everything — more rooms, more lights, more gadgets and a much bigger heating bill. That's exactly why a joined-up approach pays off. Instead of one clever device, you want three categories working together: heating you control room-by-room, plugs that end standby waste, and lighting that's never left on in an empty playroom.
~60%
Of a home's bill is heating
£200–£400
Typical yearly saving, 3-bed semi
1–3 yrs
Payback on a full starter kit
Heating is the big lever, so it's where most of the money is — but plugs and lighting are the cheap, fast wins that start saving the day they arrive.
Your starter kit
- A smart thermostat — turns the heating down automatically when the house is empty or everyone's in bed. This is the single biggest saver.
- Smart radiator valves — stop heating rooms nobody's using (spare room, dining room) while keeping the living areas warm.
- Smart plugs — kill standby on the TV wall, games consoles and kitchen worktop appliances.
- Smart lighting — schedule and dim the busiest rooms; no more landing and hallway lights burning all evening.
- An energy monitor — shows live usage so the whole family can see the difference and spot what's draining power.
Quick win
The Home Saver Bundle packages the core of this together at a better price than buying separately — a simple one-box start for a whole house.
What a 3-bed semi can save
Real savings depend on your home and habits, but here's a realistic breakdown for a typical 3-bed semi at around 34p/kWh electricity and current gas prices:
| Where the saving comes from | Typical per year |
|---|---|
| Smart thermostat (turn-down when out / asleep) | £120–£220 |
| Radiator valves (don't heat empty rooms) | £40–£90 |
| Smart plugs (standby on TVs, consoles, kitchen) | £40–£70 |
| Smart lighting (dim + schedule busy rooms) | £20–£40 |
| Total | £220–£420 |
Why the range is wide
A family that's out at work and school all day saves the most from heating controls, because there are more empty hours to turn down. Watch your savings calculator estimate for your own kit list.
Setting up each device category
- 1
Smart plugs & lighting first
Plug in, screw in, connect to Wi-Fi and set schedules. No tools — a great job to do with the kids in an afternoon. - 2
Radiator valves next
They screw onto the existing radiator valve by hand in place of the old dial. No draining the system, no plumber. - 3
Smart thermostat last
This replaces your existing thermostat. Many are DIY-friendly, but if it wires into the boiler, book a qualified heating engineer — it's the one job worth doing properly. - 4
Add the energy monitor
Clip it on (or plug it in per the model) and use it as the family scoreboard for the first month.
When to call a professional
Anything that connects to your boiler or mains wiring should be fitted by a qualified electrician or Gas Safe / heating engineer. Plugs, bulbs and screw-on valves are safe DIY; the thermostat wiring may not be.
Child-safety considerations
- Choose smart plugs with shuttered sockets and keep them behind furniture or above little hands where you can.
- Never run heaters, hair straighteners or anything high-heat on a smart plug unless it's specifically rated for it — a schedule could switch a heater on in an empty room.
- Use the app's scheduling instead of leaving trailing extension leads and chargers within reach.
- Set night-time lighting scenes to a warm, low glow for kids' rooms — gentler and cheaper than a full-brightness landing light left on.
Long-term investment vs payback
A full starter kit is a bigger upfront spend than a single plug — but for a family home it's an investment that keeps paying. Most families see the whole kit pay for itself within one to three years, then bank £200–£400 every year after that, plus a warmer, more controllable home in the meantime.
Not ready for everything at once? Start with the thermostat and a couple of plugs — the two biggest savers — and add valves and lighting as the savings roll in.
- Wattly Home Saver BundleWhole-home energy control for families — smart thermostat, plugs and bulbs that pay for themselves in under a year.£89.99View →
- Nimbus Smart ThermostatLearns your routine and stops heating an empty home — the single biggest saving in most households.£129.99View →
- ThermaValve Smart Radiator ValveHeat only the rooms you use. Screws onto your radiator in minutes — no plumber, no draining.£39.99View →
- Pulse Energy MonitorSee exactly what your home is spending in real time — the first step to knowing where to save.£49.99View →



